package com.wufun.overseas.zxing.v1.decoding;

import android.os.Bundle;
import android.os.Handler;
import android.os.Looper;
import android.os.Message;
import android.util.Log;

import com.google.zxing.BinaryBitmap;
import com.google.zxing.DecodeHintType;
import com.google.zxing.MultiFormatReader;
import com.google.zxing.ReaderException;
import com.google.zxing.Result;
import com.google.zxing.common.HybridBinarizer;
import com.wufun.overseas.R;
import com.wufun.overseas.main.activity.FaceTransferScanQrCodeActivity;
import com.wufun.overseas.zxing.v1.camera.CameraManager;
import com.wufun.overseas.zxing.v1.camera.PlanarYUVLuminanceSource;

import java.util.Hashtable;

/**
 * Author: hest
 * Date:  2016/4/18
 */
public class FaceTransferDecodeHandler  extends Handler {

    private static final String TAG = DecodeHandler.class.getSimpleName();

    private final FaceTransferScanQrCodeActivity activity;
    private final MultiFormatReader multiFormatReader;

    FaceTransferDecodeHandler(FaceTransferScanQrCodeActivity activity,
                              Hashtable<DecodeHintType, Object> hints) {
        multiFormatReader = new MultiFormatReader();
        multiFormatReader.setHints(hints);
        this.activity = activity;
    }

    @Override
    public void handleMessage(Message message) {
        // switch (message.what) {
        // case R.id.decode:
        // //Log.d(TAG, "Got decode message");
        // decode((byte[]) message.obj, message.arg1, message.arg2);
        // break;
        // case R.id.quit:
        // Looper.myLooper().quit();
        // break;
        // }
        if (message.what == R.id.decode) {
            decode((byte[]) message.obj, message.arg1, message.arg2);
        } else if (message.what == R.id.quit) {
            Looper.myLooper().quit();
        }
    }

    /**
     * Decode the data within the viewfinder rectangle, and time how long it
     * took. For efficiency, reuse the same reader objects from one decode to
     * the next.
     *
     * @param data
     *            The YUV preview frame.
     * @param width
     *            The width of the preview frame.
     * @param height
     *            The height of the preview frame.
     */
    private void decode(byte[] data, int width, int height) {
        long start = System.currentTimeMillis();
        Result rawResult = null;

        // modify here
        // byte[] rotatedData = new byte[data.length];
        // for (int y = 0; y < height; y++) {
        // for (int x = 0; x < width; x++)
        // rotatedData[x * height + height - y - 1] = data[x + y * width];
        // }
        // int tmp = width; // Here we are swapping, that's the difference to
        // #11
        // width = height;
        // height = tmp;

//        if (false/*CaptureActivity.isPortrait*/) {
        byte[] rotatedData = new byte[data.length];
        for (int y = 0; y < height; y++) {
            for (int x = 0; x < width; x++)
                rotatedData[x * height + height - y - 1] = data[x + y
                        * width];
        }
        int tmp = width;
        width = height;
        height = tmp;

        data = rotatedData;
//        }

        PlanarYUVLuminanceSource source = CameraManager.get()
                .buildLuminanceSource(data, width, height);
        BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
        try {
            rawResult = multiFormatReader.decodeWithState(bitmap);
        } catch (ReaderException re) {
            // continue
        } finally {
            multiFormatReader.reset();
        }

        if (rawResult != null) {
            long end = System.currentTimeMillis();
            Log.d(TAG, "Found barcode (" + (end - start) + " ms):\n"
                    + rawResult.toString());
            Message message = Message.obtain(activity.getHandler(),
                    R.id.decode_succeeded, rawResult);
            Bundle bundle = new Bundle();
            bundle.putParcelable(DecodeThread.BARCODE_BITMAP,
                    source.renderCroppedGreyscaleBitmap());
            message.setData(bundle);
            // Log.d(TAG, "Sending decode succeeded message...");
            message.sendToTarget();
        } else {
            Message message = Message.obtain(activity.getHandler(),
                    R.id.decode_failed);
            message.sendToTarget();
        }
    }
}
